US2014156A - Angularly adjustable surface plate - Google Patents

Description

Sept. 10, 1v935 J. VERDERBER ET AL l ANGULARLY ADJUSTABLE SURFACE PLATE Filed Feb.r 5, 1952 3 I l/ M if L l fr 4 tml/ Z .Q Z Y L ad w/ 2 Y 0 70 E T. w ln, 1| .I M 1.| wm||| 4 |11 Patented Sept. 10, 1935 UNl'lED STATES Fil `loseph Verderber, Cleveland, and Elmer F. Batterman, East Cleveland, Ohio Application February 5, 1932, Serial Nc. 591,216

2 Claims.

Our invention relates to improvements in surface plates which can be adjusted to any angular position with the base thereof.

Objects of our invention are to provide a, surface plate which can be adjusted to any degree of angularity with the base thereof; which can be locked in any adjusted position thereof; and wherein standard thickness gages are used to attain correct adjustment.

We attain our objects by the mechanism illustratively shown in the accompanying drawing wherein:

Fig. 1 is a plan view of an angularly adjustable surface plate embodying our invention.

15, Fig. 2 is a side view of Fig. 1.

Fig. 3 is a, longitudinal section taken on the line 3-3 of Fig. 1.

Fig. 4 is a transverse section taken on the line 4 4 in Fig. 1.

Similar reference characters refer to similar parts throughout the views.

Our invention is based on the triangulation formula that the side opposite an angle of a triangle is found by multiplying the hypotenuse by the sine oi' that angle.

The base or bed A, as shown, has the upstanding ears I0 near one end thereof and the padrest I I near the other end thereof.

The surface plate B, as shown, has, near one end thereof, the downwardly extending ears I2 sidewise outwardly adjacent to the ears I l and the downwardly extending ears I3 near the other end thereof.

The object of so locating the ears III and I2 is to retain the plate B in sidewise relation to the base A.

The shaft I4, as shown, extends through the ears I0 and I2 and forms a pivot pin for the plate B to swivel on.

The abutment member or pad I5, as shown, is secured to the base A and is hardened and ground so that the top surface thereof is parallel with the axis of the shaft I 4 and exactly parallel with the bottom face I6 of the base A.

The abutment member or shaft I1, as shown, extends through the ears I3 and abuts the pad I5 when the top face I3 of the plate B is exactly parallel with the face I6 of the base.

The locking or clamping plates I9, as shown,

are carried on each side of the device by the screws 20 tapped into the base and the screw 2| tapped into the plate and bear against the faces 21 as shown. The slots 22, 23, 24, and 25 extend through the locking plates; the slot 22 being substantially parallel with the faces I6 and I8; the

slot 23 being angular or inclined thereto; the slot 24 being arcuate and the slot 25 being arcuate in opposite arcuation to the slot 2H.

The locking or clamping plates are spaced inwardly of the sides of the device so that the 5;

heads of the screws 2i] and 2| do not project outwardly beyond the side of the plate so that the device may be set on a side thereof without interference by the clamping screws.

The additional tapped holes 26 are provided 10v hamper the swivelling of the surface plate but 20'v which can be rigidly clamped onto the base and the plate after the same are adjusted so that the plate will be held rigidly, as adjusted, against the faces 21 with no part thereof projecting beyond the faces I6 and I 3 in any position of the 25' plate. The plates E9 are reversible and shiftaole as plate adjustment may require.

The locking or clamping plates I 9 do not pivot on or at any particular point and are laterally movable relative to the screws 2li and 2i when 30l the same are screwed into any of the holes provided for that purpose. When the screws 2t and 2l are loosened, previous to adjustment of Ythe plate B, the plates I9 may assume any position against the side of the device and tightening of 351 the screws 2B and 2I will hold the plates I9 in assumed position as well as lock or hold the plate B in adjusted relation to the base A.

Reversing of the plates I9 may be resorted to when the plates I 9 as shown do not meet require- 40 ments to lock the plate B and the base A in relatively adjusted position.

Vertical reversal of the plates I9, to wit: place against the base A and the plate B that face thereof which is shown in the drawing as being 45 on the outside, will result in the slots 24 and 25 being located with the arcuation directionally diiferent from their positions shown to hold the plate B to the base A when the slot layout shown can not be used for such holding. 50

End for end or horizontal reversal of the plates I9 will result in the slots 24 and 25 being located with the arcuation directionally different from their positions shown and different from that in the vertical reversal. 55

The object of reversability of the plates I9 is to provide all possible means to hold the plate B to the base A in any adjusted position thereof and to conne the plates I9 to within the outline or boundaries of the device when the plate thereof is adjusted to any position so that the device can rest on its bottom or on either side thereof or on either end thereof.

The spaces or setting blocks 28, indicated in dotted lines in Fig. 3, are of a thickness equivalent to the quotient derived from the formula given above.

To set the top face I8 at an angle with the bottom face I6 it is only necessary to loosen the screws 2!! and 2 I, lay a block 23 of required thickness onto the pad I5, abut the shaft i7 on the block 23 by swiveling the plate B on its pivot I4, and tighten the screws 2E! and 2|.

In the device shown and described, the hypotenuse is i@ inches, the drawing being half size, or in other words, the distance between the axes of the shafts I4 and I'I is I B inches hence the hypotenuse of It] inches multiplied by the sine of the angle to which the plate is to be set will give the thickness of the block 23 to be inserted between the pad I5 and the shaft I1. The device as shown has the faces I6 and I8 parallel with each other with indication in Fig. 3 showing an angular position of the member B or the face I8.

We prefer to make the center distance between the shafts I4 and II ten parts or units of a scale, as ten inches for instance to simplify multiplication since an operator can then merely glance at a table of sines and move the decimal period one numeral to the right and read the result directly and correctly.

The use of the round shaft or pin I'I always provides a one line contact on the pad I5 or on a gage member 28 and, irrespective of the degree of angular adjustment of the plate B, the hypotenuse remains the same and the side opposite will always be located at right angles to the gage members and be the radius of the round pin.

The device shown and described carries thereon all parts or elements necessary for an angularly adjustable surface plate except the gage blocks 28 which usually can be standard gages usually carried in shops.

We are aware that changes in structure and arrangement of parts can be made in the device shown and described within the spirit and intent of our invention and of the appended claims; therefore, without limiting ourselves to the precise structure and arrangement of parts as shown and described we claim:

said ears and thereby forming a hinge joint be- 10 tween said base and said plate to adjustably swivel said plate angularly relative to the bottom of said base, a releasable clamping means engaging said base and said plate near the other end thereof to retain said base and said plate in an adjusted relation, said clamping means being confined to within the sides of said base and of said plate so that the device can be set on its side, and said clamping means including a releasable clamping plate having arcuately formed oblong screw receiving slots through the same to render said clamping means effective for various adjustments of said surface plate relative to said base.

2. In an angularly adjustable angle plate device, a base, ears upstanding from said base near one end thereof, a surface plate above said base, ears extending downwardly from said surface plate near one end thereof, the ears of said base being in sidewise contact with corresponding ears of said surface plate to retain said base and said plate in sidewise rela-tion to each other, a diametrically uniform pin extending through all of said ears and thereby forming a hinge joint between said base and said plate to adjustably swivel plate angularly relative to said base, a releasable clamping means engaging said base and said plate near the other end thereof to retain said base and said plate in an adjusted relation, said clamping means being confined to within the sides of said base and said plate so that the device can be set on its side, said clamping means including a releasable clamping plate having arcuately formed oblong screw receiving slots through the same to render said clamping means effective for various adjustments of said surface plate relative to said base, screws extending through certain of said slots, one of said screws being tapped into said base and another one being tapped into said surface plate, and a head on each of said screws to engage said clamping plate to releasably clamp said clamping plate to said base and to said surface plate.

JOSEPH VERDERBER. ELMER F. BATTERMAN. 5

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